Lake Graham: 66.1% full as of 2026-10-26
Historical Data
| Date | Percent Full |
Mean Water Level (ft) |
Reservoir Storage (acre-ft) |
Conservation Storage (acre-ft) |
Conservation Capacity (acre-ft) |
Surface Area (acres) |
|
|---|---|---|---|---|---|---|---|
| Today | 2026-10-26 | 66.1 | 1,068.07 | 29,942 | 29,928 | 45,288 | 1,929 |
| Yesterday | 2026-10-25 | 66.2 | 1,068.09 | 29,981 | 29,967 | 45,288 | 1,931 |
| 2 days ago | 2026-10-24 | 66.3 | 1,068.11 | 30,019 | 30,005 | 45,288 | 1,932 |
| 1 week ago | 2026-10-19 | 66.6 | 1,068.20 | 30,194 | 30,180 | 45,288 | 1,939 |
| 1 month ago | 2026-09-26 | 64.7 | 1,067.74 | 29,310 | 29,296 | 45,288 | 1,902 |
| 3 months ago | 2026-07-26 | 74.0 | 1,069.86 | 33,524 | 33,510 | 45,288 | 2,074 |
| 6 months ago | 2026-04-26 | 79.5 | 1,071.04 | 36,040 | 36,026 | 45,288 | 2,173 |
| 1 year ago | 2025-10-26 | 83.4 | 1,071.83 | 37,802 | 37,788 | 45,288 | 2,227 |
*
Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.
**
Values above, including today's are averaged conditions. For near real-time instantaneous water level, see table below or the interactive map viewer.
Most Recent Instantaneous Water Level
| Date/time |
Water Level (ft) |
Conservation Pool Elevation (ft) |
Height Above Conservation Pool (ft) |
|
|---|---|---|---|---|
| Most recent | 2026-10-26 14:00 | 1,068.07 | 1,075.00 | -6.93 |
| 1 hour prior | 2026-10-26 13:00 | 1,068.07 | 1,075.00 | -6.93 |
| 2 hours prior | 2026-10-26 12:00 | 1,068.08 | 1,075.00 | -6.92 |
| 6 hours prior | 2026-10-26 08:00 | 1,068.08 | 1,075.00 | -6.92 |
| 12 hours prior | 2026-10-26 02:00 | 1,068.08 | 1,075.00 | -6.92 |
| 24 hours prior | 2026-10-25 14:00 | 1,068.08 | 1,075.00 | -6.92 |
| 48 hours prior | 2026-10-24 14:00 | 1,068.12 | 1,075.00 | -6.88 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1958-01-01 |
| Vertical datum | NGVD29 +1.3 |
| Dead pool elevation | 1,030.00 ft above NGVD29 +1.3 |
| Service spillway crest elevation | 1,076.30 ft above NGVD29 |
| Top of dam elevation | 1,093.30 ft above NGVD29 |
| Conservation pool elevation | 1,075.00 ft above NGVD29 +1.3 |
| Data download (CSV) | period of record, last one year, last 30 days |
| Data Source | USGS:08088400 |
| USGS Monitoring Location | USGS:08088400 |
Lake Location
